Amana Heat Pumps HEH153

Remove Chassis from wall sleeve

Remove P clamp securing vent door control cable to center partition

Disconnect cable from vent door

Remove vent door by opening door and pulling hinge tabs out of slots in center partition

Remove the door by pulling hinge tabs out away from the center partition

Remove the chassis from the wall sleeve

Capture the refrigerant from the system

Debraze the inlet and discharge tubing from the outdoor coil

Remove all screws from the sides of the outdoor coil securing the shroud to the coil

Press the tabs on the right side of the shroud to separate the shroud from the outdoor coil

For 'E-K' models, separate the four-piece condenser shroud

Remove the two screws securing the outdoor coil to the base pan

Carefully lift the outdoor coil over the basepan lip

Remove the two screws securing the front to the chassis

Grasp the cabinet front as shown

Pull the bottom of the cabinet front away from the chassis until the retaining clips disengage

Lift the cabinet front off the chassis

Reverse this procedure to reinstall the cabinet front

Remove the two mounting screws from the control board cover

Tilt the control panel out and disconnect ribbon connector from control board

Remove the two screws securing the top screen to the evaporator assembly

Remove screws on mid partition panel and shift out of the way

Remove the two screws securing the heater assembly to the evaporator

Pull heater assembly up and out of the chassis

Disconnect all wiring to the heater assembly and remove the assembly

Record dry bulb temperature of return air at conditioner (Step A)

Record dry bulb temperature of air leaving conditioner (Step B)

Ensure dry bulb thermometer temperature on sling psychrometer is within ±1°F of return air thermometer reading (Step C)

Record wet bulb temperature on sling psychrometer

Temperature Difference Calculation

Calculate temperature difference by subtracting Step B from Step A

Use Cooling Range Chart to determine cooling range based on calculated temperature difference